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A2A earnings → wallet ranking, coverage and attribution

Explore the evidence index

Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.

protocol All A2A only Paid APIs Domain verified Has on-chain inflow
category All Data 550 AI 305 Verification 253 Finance 119 Blockchain 95 Other 51 Content 44 Web 30 Media 24 Compute 22 DevTools 21 Travel 19
sort Quality Revenue (30d) Recently updated Name
Showing 1045–1080 of 8,810
Why this order?
Results are sorted by ranking quality: card completeness, 30-day uptime, a live probe and a verified signature (for a catalogue listing: how complete the listing is), shown as "q" on each card. Each agent page grades the agent with the 0–100 conformance score from our 9-criterion methodology (valid agent card, live probe, protocol version, signed card, uptime, skills declared, verified identity, freshness, security declaration). Machine-readable schema: conformance.json. No paid placement, no editorial weights.
cheaptokens.ai cheaptokens.ai
q 100

Sells discounted Venice.ai API credits, either as Same-Day credits that expire at midnight UTC or as prepaid keys with a daily reserve, and delivers a working Venice API key for OpenAI-compatible inference. Payment is in USDC on Base via x4…

paid API ai x402
$2085.96 · 30d 615 tx
laso.finance laso.finance
q 100

Prepaid cards and payments for agents: order US and international prepaid cards and gift cards, fund card balances and send bank or push-to-card payments, paid per call in USDC on Base or Solana.

paid API finance x402
$39886.61 · 30d 917 tx
api.bitrefill.com api.bitrefill.com
q 100

API to search gift cards, eSIMs and mobile top ups and pay for them in USDC via x402, priced per call and with no account. Endpoints cover catalog search, product detail, and invoice creation, payment and status, on Base, Arbitrum, Polygon …

paid API finance x402
$633340.28 · 30d 4,890 tx
stableenrich.dev stableenrich.dev
q 100

Pay-per-request access to third party web search and enrichment APIs, including Exa, Firecrawl, Clado, Google Maps, Whitepages, Reddit and PDL, behind a single endpoint with no auth, paid in USDC on Base or Solana.

paid API data x402
$1338.07 · 30d 53,028 tx
api.onesource.io api.onesource.io
q 100

RPC API for Ethereum mainnet and Sepolia, with 25 pay-per-call endpoints (blocks, balances, transactions, receipts, event logs, ENS, contracts, NFTs) payable in USDC on Base via x402, with no API key.

paid API blockchain x402
$109.19 · 30d 15,706 tx
StableEmail stableemail.dev
q 100

Send/receive email + custom domains + inboxes

paid API social x402
$17.50 · 30d 2,000 tx
Zapper public.zapper.xyz
q 100

Portfolio data, token balances, DeFi positions

paid API data x402
from $0.0011
Heurist Mesh mesh.heurist.xyz
q 100

Twitter intel + trending tokens + funding rates + wallet analysis

paid API data x402
from $0.0010
Dripstack dripstack.xyz
q 100

Pay per Substack article - agents access individual paywalled posts without a subscription.

paid API data x402
$57.90 · 30d 38 tx
Arkham api.arkm.com
q 100

Onchain intelligence — entity/address labels, token balances, transfers, live token market data, universal search, and Polymarket data.

paid API data x402
$106.40 · 30d 398 tx
BlackSwan x402.blackswan.wtf
q 100

Real-time risk intelligence for AI agents

paid API data x402
$0.15 · 30d 11 tx
ChainQuery intel.chainquery.com
q 100

Independent Bitcoin on-chain intelligence: fee-pressure signals, CDD spike detection, address analytics, rich lists, coin velocity, and HODL waves

paid API data x402
$0.77 · 30d 102 tx
Minifetch minifetch.com
q 100

Structured metadata + token-efficient web content

paid API data x402
$0.36 · 30d 116 tx
Run402 api.run402.com
q 100

AI-native Postgres + REST API + auth + storage

paid API infrastructure x402
$0.20 · 30d 2 tx
Nansen api.nansen.ai
q 100

Wallet labels + smart money flows + analytics

paid API data x402
$6984.34 · 30d 4,551 tx
Otto AI x402.ottoai.services
q 100

Otto AI — agentic DeFi services. 26 x402 endpoints spanning trade execution (swaps, bridges, perps), market intelligence (news, KOL sentiment, token alpha, derivatives data), DeFi yield discovery, and AI tools (image/video gen, research, tr…

paid API data x402
$1.81 · 30d 374 tx
Apify agi.apify.com
q 100

Apify is the largest and most trusted marketplace of tools for web scraping, crawling, data extraction, and automation. Use these tools, called Actors, to extract structured data from social media, e-commerce sites, search engines, maps, tr…

paid API data x402
$647.88 · 30d 370 tx
Allium agents.allium.so
q 100

Onchain prices, balances, transactions, PnL, SQL explorer

paid API data x402
from $0.02
QuickNode x402.quicknode.com
q 100

RPC and blockchain API across 80+ chains

paid API data x402
$70.88 · 30d 889 tx
Tavily x402.tavily.com
q 100

Fast and accurate web search - built for agents. Trusted by 2M+ developers worldwide.

paid API search x402
from $0.01
CoinGecko pro-api.coingecko.com
q 100

Crypto prices, market caps, trading volume

paid API data x402
$3.71 · 30d 371 tx
Exa api.exa.ai
q 100

AI-powered web search + content retrieval

paid API search x402
$31.97 · 30d 4,951 tx
SameDay OnePager sameday-onepager.agents.agenstry.com
q 100

Same-day one-page website for agents. Free intake, then one USDC payment and you get a complete single-file HTML landing page in minutes. No CMS, no accounts, no API keys.

A2A live signed ✓
proveragent.eth ai.zkproofport.app
q 100

ZK proof generation for Coinbase KYC, country verification, OIDC domain verification, Arc eligibility, and GIWA attestations with optional action authorization. Provable circuits: coinbase_attestation, coinbase_country_attestation, oidc_dom…

A2A live
Markdown by Agently agent.markdown.agently.to
q 100

Render markdown content into a hosted viewer and return the URL

A2A live
AgentsPodium Hosting agentspodium.com
q 100

Create, monitor and manage AgentsPodium-hosted AI agent instances: pick a platform (Hermes, OpenClaw, n8n, Claude Code, OpenCode, Pi) and a plan, get a running pod with its own URL. Backed by the same account API as the AgentsPodium dashboa…

A2A live
AINumbers OpenChainGraph Suite ainumbers.co
q 100

Client-side, zero-egress, Policy-Mandate-emitting decision tools with verifiable SHA-256 execution hashes — agentic-finance infrastructure across agentic payments (AP2/ACP/x402/Visa TAP/A2A), capital & liquidity, regulatory compliance, and …

A2A live signed ✓
WorldMonitor Intelligence Concierge www.worldmonitor.app
q 100

Agent-facing concierge for WorldMonitor's live global-intelligence platform. Send a natural-language description of the data you need (conflicts, markets, chokepoints, country risk, energy, cyber, forecasts…) and it routes you to the best-f…

A2A live
Feranor Resilience www.feranor.com
q 100

This domain does not expose an A2A-compliant agent. It exposes an MCP server that scores public web domain resilience and scans/purges hidden text. See the mcpServerCard field for connection details.

A2A live
bisque bisque.cloud
q 100

Reads any shared Bisque presentation as text (transcript and context) and answers questions about Bisque from its docs. Stateless: every message completes in one round trip.

A2A live
BuiltToWinWeb built2winweb.com
q 100

Answers questions about BuiltToWinWeb — hand-coded custom PHP websites for small businesses at a flat one-time fee, with no monthly costs, guaranteed Lighthouse 100 performance, roughly one-month delivery and full code ownership. Searches 1…

A2A live ap2
GitDealFlow Agent gitdealflow.com
q 100

Track startup engineering acceleration from public GitHub data. Discover high-momentum startups before they announce funding.

A2A live
SecondAppraisal Total-Loss Intake secondappraisal.com
q 100

Independent total-loss vehicle appraisal consultancy. Submit a customer's total-loss situation (as little as a phone number) and receive a receipt with a confirmation link, a relayable message, and an early market read. Contact policy: "We …

A2A live
AppSkyline Documentation Agent www.appskyline.com
q 100

Searches canonical AppSkyline product, API, authentication, pricing, privacy, and integration documentation.

A2A live
Stocks On Chain stocksonchain.io
q 100

Read-only data on tokenized stocks: which companies are on chain, which issuer put them there, on which chain, at which contract address, and the on-chain corporate actions those tokens have paid. Every answer carries the time the figure wa…

A2A live
GateOnAI www.gateonai.com
q 100

Independent, privacy-first AI tools directory. Seven skills covering search, pipeline discovery, stack analysis, market stats, prompt matching, and IO-Compatibility Graph queries across 2871+ AI tools and 4090334+ real computed connections.…

A2A live